Refactored macros from bitbucket.org/snej/myutilities

gistfile1.m

#define $array(OBJS...)     ({id objs[]={OBJS}; \
	[NSArray arrayWithObjects: objs count: sizeof(objs)/sizeof(id)];})
#define $marray(OBJS...)    ({id objs[]={OBJS}; \
	[NSMutableArray arrayWithObjects: objs count: sizeof(objs)/sizeof(id)];})

#define $mdict(PAIRS...)     ( \
	{id pairs[]={PAIRS}; \
		NSMutableDictionary *d = [NSMutableDictionary dictionary]; \
		int cnt = sizeof(pairs)/sizeof(id); \
		for(int i=0; i<cnt; i+=2) { \
			[d setObject:pairs[i+1] forKey:pairs[i]]; \
		} \
		d; \
	})

#define $object(VAL)        ({__typeof(VAL) v=(VAL); _collection_helper_box(&v,@encode(__typeof(v)));})

NSValue* _collection_helper_box(const void *value, const char *encoding);

----------------

#import "NCCollectionHelpers.h"

NSValue* _collection_helper_box(const void *value, const char *encoding)
{
    // file:///Developer/Documentation/DocSets/com.apple.ADC_Reference_Library.DeveloperTools.docset/Contents/Resources/Documents/documentation/DeveloperTools/gcc-4.0.1/gcc/Type-encoding.html
    char e = encoding[0];
    if( e=='r' )                // ignore 'const' modifier
        e = encoding[1];
    switch( e ) {
        case 'B':   return [NSNumber numberWithBool: *(BOOL*)value];
        case 'c':   return [NSNumber numberWithChar: *(char*)value];
        case 'C':   return [NSNumber numberWithUnsignedChar: *(char*)value];
        case 's':   return [NSNumber numberWithShort: *(short*)value];
        case 'S':   return [NSNumber numberWithUnsignedShort: *(unsigned short*)value];
        case 'i':   return [NSNumber numberWithInt: *(int*)value];
        case 'I':   return [NSNumber numberWithUnsignedInt: *(unsigned int*)value];
        case 'l':   return [NSNumber numberWithLong: *(long*)value];
        case 'L':   return [NSNumber numberWithUnsignedLong: *(unsigned long*)value];
        case 'q':   return [NSNumber numberWithLongLong: *(long long*)value];
        case 'Q':   return [NSNumber numberWithUnsignedLongLong: *(unsigned long long*)value];
        case 'f':   return [NSNumber numberWithFloat: *(float*)value];
        case 'd':   return [NSNumber numberWithDouble: *(double*)value];
        case '*':   return [NSString stringWithUTF8String: *(char**)value];
        case '@':   return *(id*)value;
        default:    return [NSValue value: value withObjCType: encoding];
    }
}